Plastic resin codes are numbers (1–7) found inside the recycling triangle symbol on plastic products.
They tell you exactly what type of plastic it is and how it should be sorted and recycled.
Polyethylene Terephthalate
Water bottles, soft drink bottles, food jars.
High-Density Polyethylene
Milk jugs, detergent bottles, shampoo containers.
Polyvinyl Chloride
Pipes, cling wrap, some packaging.
Low-Density Polyethylene
Grocery bags, bread bags, squeeze bottles.
Polypropylene
Yogurt containers, bottle caps, food storage.
Polystyrene
Foam cups, takeout containers, packing peanuts.
Mixed / Miscellaneous
Polycarbonate, bioplastics, multi-layer plastics.